12321149 has 2 divisors, whose sum is σ = 12321150. Its totient is φ = 12321148.

The previous prime is 12321137. The next prime is 12321151. The reversal of 12321149 is 94112321.

12321149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9703225 + 2617924 = 3115^2 + 1618^2 .

It is an emirp because it is prime and its reverse (94112321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12321149 is a prime.

Together with 12321151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160574 + 6160575.

It is an arithmetic number, because the mean of its divisors is an integer number (6160575).

Almost surely, 2^12321149 is an apocalyptic number.

It is an amenable number.

12321149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321149 is an equidigital number, since it uses as much as digits as its factorization.

12321149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 12321149 is about 3510.1494270187. The cubic root of 12321149 is about 230.9672498438.

The spelling of 12321149 in words is "twelve million, three hundred twenty-one thousand, one hundred forty-nine".